/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/VoiceEngineImpl.h
Submits remote voice data for playback by the voice system. No playback occurs if the priority for this remote talker is 0xFFFFFFFF. Size indicates how much data to submit for processing. It's also an out value in case the system could only process a smaller portion of the data
0 upon success, an error code otherwise
virtual uint32 SubmitRemoteVoiceData ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & RemoteTalkerId, uint8 * Data, uint32 * Size )